18 40 050 Removing and installing/replacing front exhaust manifold (N52/ N52K/ N51)
WARNING: This page is about a different variant/trim than selected.
Necessary preliminary tasks:
- Remove rear exhaust manifold
NOTE:
The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.
Remove control sensor from cylinders 1 to 3.
Remove monitor sensor from cylinders 1 to 3.
Tightening torque: 11 78 1AZ, see 11 78 EXHAUST GAS CONTROL, LAMBDA CONTROL SENSOR / LAMBDA MONITOR SENSOR .
Unscrew nuts.
Remove exhaust manifold (1).
Installation:
Clean sealing faces and replace seals.
Replace nuts.